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Altera_Forum
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14 years ago

Trying to test Filter using NCO Megafunction and Signal Tap Analyzer?

I've built a low-pass filter using Fdatool in matlab and used HDL coder in matlab to get a vhdl to simulate on hardware. i'm trying to use the NCO megafunction to generate a signal to be filtered in ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Testing a filter with NCO is of limited efficiency. A simple test is to inject impulse input i.e. first sample set high, others zero for some time and repeat this pattern. then you should get impulse response at output i.e. your coeffs scaled.

The best way however is to pass random data to both your design and matlab "filter" function and check for bit true performance.